<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="edu.sctu.edu.sctu.User" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title></title>
</head>
<body>

<style type="text/css">
    table {
        border-collapse: collapse;
    }

    td {
        border: 1px solid #000;
        padding: 10px;
    }
</style>

<table>
    <tr>
        <td>编号</td>
        <td>用户名</td>
        <td>密码</td>
        <td>操作1</td>
        <td>操作2</td>
    </tr>

    <%



        // 数据库中读取数据保存在List集合中。
        List<edu.sctu.User> userList = new ArrayList<edu.sctu.User>();

        // 3+1 读取数据库数据保存到List中。
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                "root",
                "sctu123456"
        );

        statement = connection.createStatement();

        resultSet = statement.executeQuery(sql);

        while (resultSet.next()) {

            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);

            edu.sctu.User user = new edu.sctu.User();
            user.setId(id);
            user.setName(username);
            user.setPassword(password);

            userList.add(user);
        }
        resultSet.close();
        statement.close();
        connection.close();

        request.setAttribute("userList", userList);
    %>


    <c:forEach var="user" items="${userList}">
        <tr>
            <td>${user.id}</td>
            <td>${user.username}</td>
            <td>${user.password}</td>
            <td><a href="">删除</a></td>
            <td><a href="">更新</a></td>
        </tr>

    </c:forEach>



</table>


<c:forEach var="i" begin="0" end="9">
    <p>${i}</p>
</c:forEach>

</body>
</html>
